does anybody know of any good software for the apple mac for drawing wiring diagrams:)

If you get no better suggestions you could try Omnigraffle. It's not perfect, but it's ok for smaller diagrams.

I use EXPRESS PCB (expresspcb.com) --it's a circuit to PCB program ,but the schematic can be used to create wiring diagrams + you can make you're own symbols and conponants.Sort of cheap (FREEWARE ),BUT NOT TOO NASTY TO USE .(andi f you want to make a PCB /plug coupler - you can use the PCB feature)